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ClinicalTrials.gov public records Last synced Oct 20, 2026, 11:41 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 145–168 of 212 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Trisomy 21 Clear all
Completed No phase listed Observational

Non-invasive Chromosomal Examination of Trisomy Study

NCT01511458
View directory record Official record
Conditions
Trisomy 21
Interventions
Not listed
Lead sponsor
Roche Sequencing Solutions
Industry
Eligibility
18 Years to 60 Years · Female only
Enrollment
18,955 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
26
States / cities
Tucson, Arizona • Oakland, California • Palo Alto, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2014 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Phase 3 Interventional

Chemotherapy in Treating Children With Down Syndrome and Myeloproliferative Disorder, Acute Myelogenous Leukemia, or Myelodysplastic Syndrome

NCT00003593
View directory record Official record
Conditions
Leukemia, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Neoplasms
Interventions
asparaginase, cytarabine, daunorubicin hydrochloride, methotrexate, therapeutic hydrocortisone, thioguanine
Drug
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 21 Years
Enrollment
254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2012
U.S. locations
209
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 151 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2013 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Phase 2 Interventional Results available

Evaluating The Efficacy And Safety Of Donepezil Hydrochloride (HCl) (Aricept) In Treating Cognitive Dysfunction Exhibited By Children With Down Syndrome

NCT00570128
View directory record Official record
Conditions
Down Syndrome
Interventions
Donepezil HCl, Placebo
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
10 Years to 17 Years
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
31
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 25 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2021 · Synced Oct 20, 2026, 11:41 PM EDT
Recruiting Not applicable Interventional

Harness-based Mobility Intervention for Infants With Down Syndrome

NCT06219863
View directory record Official record
Conditions
Down Syndrome
Interventions
Body weight supported harness
Behavioral
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
Up to 2 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Recruiting Not applicable Interventional

A VIRTUAL Three-month Intervention Study of the Effects of a Smartphone Application (HippoCamera) on Memory in Teens and Young Adults With Down Syndrome

NCT07008989
View directory record Official record
Conditions
Memory Replay, HippoCamera
Interventions
Memory replay
Behavioral
Lead sponsor
Boston College
Other
Eligibility
15 Years to 35 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Not applicable Interventional

Proactive Speech and Language Intervention for Infants With Down Syndrome

NCT06450509
View directory record Official record
Conditions
Down Syndrome
Interventions
Babble Boot Camp
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
0 Months to 12 Months
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

National Prevalence and Impact of Noninvasive Prenatal Testing

NCT02284399
View directory record Official record
Conditions
Aneuploidy
Interventions
non-invasive prenatal testing
Other
Lead sponsor
Obstetrix Medical Group
Industry
Eligibility
18 Years to 60 Years · Female only
Enrollment
4,488 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
7
States / cities
Phoenix, Arizona • Long Beach, California • San Jose, California + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 19, 2019 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational

Clinical Evaluation of the SEQureDx Trisomy Test in Low Risk Pregnancies

NCT01597063
View directory record Official record
Conditions
Aneuploidy, Down Syndrome, Noninvasive Prenatal Screening
Interventions
SEQureDx Trisomy Test
Device
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years to 34 Years · Female only
Enrollment
3,333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
27
States / cities
Mobile, Alabama • Chandler, Arizona • Phoenix, Arizona + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2016 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Development of Non-invasive Prenatal Screening Test for Microdeletions Based on Fetal DNA Isolated From Maternal Blood

NCT01852708
View directory record Official record
Conditions
Trisomy 21, Trisomy 18, Trisomy 13, Sex Chromosome Abnormalities, Microdeletion Syndromes
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,059 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
7
States / cities
San Carlos, California • San Gabriel, California • Washington D.C., District of Columbia + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2020 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Not applicable Interventional

Impact of an Orthotic Garment on Gross Motor Skills for Infants With Down Syndrome

NCT04603352
View directory record Official record
Conditions
Down Syndrome
Interventions
Hip Helpers home program
Other
Lead sponsor
University of St. Augustine for Health Sciences
Other
Eligibility
3 Months to 15 Months
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
3
States / cities
San Marcos, California • Saint Augustine, Florida • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 18, 2025 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluating Cognitive Outcomes in Down Syndrome

NCT04208685
View directory record Official record
Conditions
Down Syndrome
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 35 Years
Enrollment
202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
2
States / cities
Fort Collins, Colorado • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Not yet recruiting Phase 2 Interventional

An Open-Label Phase II Feasibility Study for the Use of Ublituximab in Adults With Down Syndrome Regression Disorder

NCT07812181
View directory record Official record
Conditions
Down Syndrome Regression Disorder (DSRD), Down Syndrome (Trisomy 21), Neuroinflammatory / Neuropsychiatric Disorder
Interventions
Ublituximab
Drug
Lead sponsor
Jonathan Santoro
Other
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational

Gait Parameters of Persons With Down Syndrome With and Without Orthotics Using GaitRite

NCT01390558
View directory record Official record
Conditions
Down Syndrome
Interventions
custom orthotics
Procedure
Lead sponsor
Oregon Health and Science University
Other
Eligibility
2 Years to 80 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 15, 2019 · Synced Oct 20, 2026, 11:41 PM EDT
Recruiting No phase listed Observational

Collaboration for Down Syndrome Progress (CDP)

NCT07625579
View directory record Official record
Conditions
Down Syndrome, Chromosome Disorders, Intellectual and Developmental Disabilities
Interventions
Not listed
Lead sponsor
RTI International
Other
Eligibility
Not listed
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
15
States / cities
Orange, California • Aurora, Colorado • Miami, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Parent Supported Weight Reduction in Down Syndrome

NCT01256112
View directory record Official record
Conditions
Down Syndrome
Interventions
Parent Supported Behavioral Intervention, Nutrition/Activity Education (NAE)
Behavioral
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
13 Years to 26 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 18, 2017 · Synced Oct 20, 2026, 11:41 PM EDT
Recruiting Phase 2 Interventional

A Study to Evaluate Mivelsiran in Adult Participants With Early-Stage Down Syndrome-Associated Alzheimer's Disease (DS-AD)

NCT07636811
View directory record Official record
Conditions
Down Syndrome-Associated Alzheimer's Disease (DS-AD)
Interventions
Mivelsiran, Placebo
Drug
Lead sponsor
Alnylam Pharmaceuticals
Industry
Eligibility
40 Years to 55 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
4
States / cities
Maitland, Florida • Naples, Florida • Indianapolis, Indiana + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Not applicable Interventional

Role of Early Motor Experience in Infants With Down Syndrome

NCT05144373
View directory record Official record
Conditions
Down Syndrome
Interventions
Gross motor intervention, gross and fine motor intervention
Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
7 Months to 36 Months
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Phase 1 Interventional Results available

Investigation of the Safety of Intranasal Glulisine in Down Syndrome

NCT02432716
View directory record Official record
Conditions
Down Syndrome
Interventions
Insulin glulisine, Saline
Drug
Lead sponsor
HealthPartners Institute
Other
Eligibility
35 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 6, 2019 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational

Down Syndrome Biomarker Initiative (DSBI)

NCT02141971
View directory record Official record
Conditions
Down Syndrome, Alzheimer's Disease
Interventions
Not listed
Lead sponsor
Michael Rafii
Other
Eligibility
30 Years to 60 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 2, 2017 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Natural History of Amyloid Deposition in Adults With Down Syndrome

NCT01303133
View directory record Official record
Conditions
Down Syndrome
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
30 Years and older
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2018
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Healthy Lifestyles for People With Intellectual Disabilities

NCT00597948
View directory record Official record
Conditions
Mental Retardation, Developmental Disabilities, Intellectual Disabilities
Interventions
Healthy Lifestyles Curriculum
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 65 Years
Enrollment
131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 27, 2012 · Synced Oct 20, 2026, 11:41 PM EDT
Active, not recruiting Phase 3 Interventional

A Study to Investigate Blinatumomab in Combination With Chemotherapy in Patients With Newly Diagnosed B-Lymphoblastic Leukemia

NCT03914625
View directory record Official record
Conditions
B Acute Lymphoblastic Leukemia, B Lymphoblastic Lymphoma, Down Syndrome
Interventions
Asparaginase Erwinia chrysanthemi, Blinatumomab, Cyclophosphamide, Cytarabine, Dexamethasone, Doxorubicin Hydrochloride, Leucovorin Calcium, Mercaptopurine, Mercaptopurine Oral Suspension, Methotrexate, Pegaspargase, Prednisolone, Prednisone, Radiation Therapy, Thioguanine, Vincristine Sulfate
Drug · Biological · Radiation
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
365 Days to 31 Years
Enrollment
6,720 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
201
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 153 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2026 · Synced Oct 20, 2026, 11:41 PM EDT
Completed Not applicable Interventional Results available

Gait in Children With Down Syndrome While Wearing Orthoses

NCT01598350
View directory record Official record
Conditions
Down Syndrome
Interventions
Supramalleolar Orthoses (Cascade)
Device
Lead sponsor
University of Puget Sound
Other
Eligibility
2 Years to 10 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Dec 30, 2013 · Synced Oct 20, 2026, 11:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Examining Social, Emotional, and Cognitive Functioning in People With Fragile X and Down Syndromes

NCT00879515
View directory record Official record
Conditions
Anxiety Disorders, Child Developmental Disorders, Pervasive
Interventions
Not listed
Lead sponsor
University of California, Davis
Other
Eligibility
5 Years to 25 Years
Enrollment
511 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 20, 2026, 11:41 PM EDT